mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
080bdb7f3a
Patch by Anders Larsen, 29 Apr 2005
* Fix problems introduced by Patch by Steven Scholz, 02 Mar 2005
(8e2be51de8)
191 lines
4.4 KiB
C
191 lines
4.4 KiB
C
/*
|
|
*
|
|
* (C) Copyright 2003
|
|
* Author : Hamid Ikdoumi (Atmel)
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* Adapted for KwikByte KB920x board: 22APR2005
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <at91rm9200_net.h>
|
|
#include <net.h>
|
|
#include <lxt971a.h>
|
|
|
|
#ifdef CONFIG_DRIVER_ETHER
|
|
|
|
#if (CONFIG_COMMANDS & CFG_CMD_NET)
|
|
|
|
/*
|
|
* Name:
|
|
* lxt972_IsPhyConnected
|
|
* Description:
|
|
* Reads the 2 PHY ID registers
|
|
* Arguments:
|
|
* p_mac - pointer to AT91S_EMAC struct
|
|
* Return value:
|
|
* TRUE - if id read successfully
|
|
* FALSE- if error
|
|
*/
|
|
unsigned int lxt972_IsPhyConnected (AT91PS_EMAC p_mac)
|
|
{
|
|
unsigned short Id1, Id2;
|
|
|
|
at91rm9200_EmacEnableMDIO (p_mac);
|
|
at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID1, &Id1);
|
|
at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID2, &Id2);
|
|
at91rm9200_EmacDisableMDIO (p_mac);
|
|
|
|
if ((Id1 == (0x0013)) && ((Id2 & 0xFFF0) == 0x78E0))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Name:
|
|
* lxt972_GetLinkSpeed
|
|
* Description:
|
|
* Link parallel detection status of MAC is checked and set in the
|
|
* MAC configuration registers
|
|
* Arguments:
|
|
* p_mac - pointer to MAC
|
|
* Return value:
|
|
* TRUE - if link status set succesfully
|
|
* FALSE - if link status not set
|
|
*/
|
|
UCHAR lxt972_GetLinkSpeed (AT91PS_EMAC p_mac)
|
|
{
|
|
unsigned short stat1;
|
|
|
|
if (!at91rm9200_EmacReadPhy (p_mac, PHY_LXT971_STAT2, &stat1))
|
|
return FALSE;
|
|
|
|
if (!(stat1 & PHY_LXT971_STAT2_LINK)) /* link status up? */
|
|
return FALSE;
|
|
|
|
if (stat1 & PHY_LXT971_STAT2_100BTX) {
|
|
|
|
if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
|
|
|
|
/*set Emac for 100BaseTX and Full Duplex */
|
|
p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
|
|
} else {
|
|
|
|
/*set Emac for 100BaseTX and Half Duplex */
|
|
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
|
|
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
|
|
| AT91C_EMAC_SPD;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
} else {
|
|
|
|
if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {
|
|
|
|
/*set MII for 10BaseT and Full Duplex */
|
|
p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
|
|
~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
|
|
| AT91C_EMAC_FD;
|
|
} else {
|
|
|
|
/*set MII for 10BaseT and Half Duplex */
|
|
p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Name:
|
|
* lxt972_InitPhy
|
|
* Description:
|
|
* MAC starts checking its link by using parallel detection and
|
|
* Autonegotiation and the same is set in the MAC configuration registers
|
|
* Arguments:
|
|
* p_mac - pointer to struct AT91S_EMAC
|
|
* Return value:
|
|
* TRUE - if link status set succesfully
|
|
* FALSE - if link status not set
|
|
*/
|
|
UCHAR lxt972_InitPhy (AT91PS_EMAC p_mac)
|
|
{
|
|
UCHAR ret = TRUE;
|
|
|
|
at91rm9200_EmacEnableMDIO (p_mac);
|
|
|
|
if (!lxt972_GetLinkSpeed (p_mac)) {
|
|
/* Try another time */
|
|
ret = lxt972_GetLinkSpeed (p_mac);
|
|
}
|
|
|
|
/* Disable PHY Interrupts */
|
|
at91rm9200_EmacWritePhy (p_mac, PHY_LXT971_INT_ENABLE, 0);
|
|
|
|
at91rm9200_EmacDisableMDIO (p_mac);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
|
|
/*
|
|
* Name:
|
|
* lxt972_AutoNegotiate
|
|
* Description:
|
|
* MAC Autonegotiates with the partner status of same is set in the
|
|
* MAC configuration registers
|
|
* Arguments:
|
|
* dev - pointer to struct net_device
|
|
* Return value:
|
|
* TRUE - if link status set successfully
|
|
* FALSE - if link status not set
|
|
*/
|
|
UCHAR lxt972_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
|
|
{
|
|
unsigned short value;
|
|
|
|
/* Set lxt972 control register */
|
|
if (!at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_CTRL, &value))
|
|
return FALSE;
|
|
|
|
/* Restart Auto_negotiation */
|
|
value |= PHY_COMMON_CTRL_RES_AUTO;
|
|
if (!at91rm9200_EmacWritePhy (p_mac, PHY_COMMON_CTRL, &value))
|
|
return FALSE;
|
|
|
|
/*check AutoNegotiate complete */
|
|
udelay (10000);
|
|
at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_STAT, &value);
|
|
if (!(value & PHY_COMMON_STAT_AN_COMP))
|
|
return FALSE;
|
|
|
|
return (lxt972_GetLinkSpeed (p_mac));
|
|
}
|
|
|
|
#endif /* CONFIG_COMMANDS & CFG_CMD_NET */
|
|
|
|
#endif /* CONFIG_DRIVER_ETHER */
|